Apple iPod nano 16 GB Blue (4th Generation)  (Discontinued by Manufacturer) 16 GB Storage Capacity (Estimated Free Space 12.5 GB) 16 GB capacity for 4,000 songs, 14,000 photos, or 16 hours of video Up to 24 hours of music playback or 4 hours of video playback when fully charged 2-inch LCD with blue-white LED backlight and 320-by-240-pixel resolution Supported audio formats: AAC, Protected AAC, MP3, MP3 VBR, Audible, Apple Lossless, AIFF, and WAV Supported video formats: H.264, MPEG-4; Supported image file types: JPEG, BMP, GIF, TIFF, PSD (Mac only), and PNG